/**
 * Syncs README.md with auto-generated photon list while preserving user content
 *
 * Uses HTML comment markers to identify auto-generated sections.
 * Content outside markers is preserved on each sync.
 */
export declare class ReadmeSyncer {
    private readmePath;
    constructor(readmePath: string);
    /**
     * Sync README with generated content
     *
     * @param generatedContent - The auto-generated markdown to insert
     * @returns true if README was updated, false if created new
     */
    sync(generatedContent: string): Promise<boolean>;
    /**
     * Replace content between markers, preserving everything else
     */
    private replaceMarkedSection;
    /**
     * Check if README has marked section
     */
    hasMarkers(): Promise<boolean>;
    /**
     * Extract user content (everything outside markers)
     */
    extractUserContent(): Promise<{
        before: string;
        after: string;
    } | null>;
}
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